Hoisting and pulling mechanism.



R. N. EGGLESTON.

HolsTlNG AND PULLING MECHANISM.

APPLICATION FILED MAY 29, |914.

R. N. EGGLESTON.

HOISTING AND PULLING MECHANISM.

APPLxcATmN FILED MAY 29.1914.

1,177,767. Patented Apr. 4,1916.

2 SHEETS-SHEET 2.

,UNITED STATES OFFICE.

ROBERT N. 'EGGLESTON, OF MUSKOGEE, OKLAHOMA, ASSIGNOR TO PULL-U-OUTMANU- FACTUBING COMPANY, OF ST. LOUIS, MISSOURI, A CORPORATION 0FMISSOURI.

HOISTING AND PULLING- MECHANISM.

Specification of Letters Patent.

Patented Apr. 4,1971 6.

Application med may 29, 1914. serial No. 841,900.

To all whom it may concern.'

Be it known that I, ROBERT N. EGGLns'roN, citizen of the United States,residingat Muskogee, in the county of Muskogee and State of Oklahoma,have invented certain new and useful Improvements in Hoisting andPulling Mechanism, of which the following is a specification.

This invention relates to hoisting and pulling mechanisms, and has forits main object to provide a small, light-weight, manually-operablemechanism that can be used succefullv for lifting great weights or eX-erting a strong pull on a device which it is desired to move.

Another object is to provide a hoisting and pulling mechanism thatcomprises a block and tackle and manually-operable winding device orwindlass combined as a single unit and constructed in such a manner thatthe complete mechanism can be carried in the tool boX or other smallcompartment of an automobile when it is not in use.

Other objects and desirable features of my invention will be hereinafterpointed out.

In the drawings: Figure 1 is a perspective view of my invention employedin extracting a self-propelled vehicle from a mudhole; Fig. 2 is a topplan view of the windlass mechanism; Fig. 3 is a perspective view of theentire device folded to its most compact form for shipment or storage;Fig. 4 is a fragmentary sectional view taken on the line 4 4 of Fig. 2;Fig. 5 is a fragmentary sectional view taken on the line 5-5 of Fig. 4;Fig. 6 is a fragmentary perspective view of the pawl and ratchetmechanism employed `in connection with the operating lever showing theparts disassembled.

Corresponding and like parts are referred to in the followingdescription and indicated in all the views of the drawings by the samereference characters.

-My improved device consists principally of a new and improved type ofmanually operable windlass or cable winding apparatus, indicated as aWhole by the numeral l0. This windlass includes a frame comprisingspaced side members 11 and 12, preferably in the form of metal strapsprovided along their outer faces with longitudinally extendingreinforcing ribs 13, in order to insure the maximum strength with theleast weight and having their end portions bent toward each other andsecured by bolts 14 and nuts 15.

As best shown in Fig. 2, it will be seen thatthe straps 11 and 12 havetheir end portions thickened to form reinforcingl heads to receive the.securing bolts 14 and that the end portions at one end of the framewhich they form, extend for a considerable distance in parallel spacedrelation to each other. These straps are provided intermediate theirlength with lateral projections or guard arms 16, the free ends of whichare directed inwardly to overlap each other, being mortised as shown at17 for close interlocking engagement, a screw 18 or other fasteningdevice being threaded through their overlapping ends to secure themtogether. These guard arms 16 form a yoke-shaped device that serves notonly as guard, but also as a brace for the inner portions of the sidemembers of the frame. An idler pullev 1 9, peripherally grooved toreceive a cable, is journaled upon a shaft 20 mounted in bearings 21formed adjacent the 'forward end of the frame 10.

The side members of the frame, adjacent the guard arms 16, are thickenedeXteriorly to provide bearings 22 for a shaft 23 upon which is journaledthe winding drum of the windlass, indicated as a whole by the numeral24. This winding drum, as best shown in Figs. 4 and 5 of the drawings;is cast or otherwise formed in a single piece of metal, one side facebeing formed with an annular recess or chamber providing a central hubportion 25 and peripheral cable receiving portion 26 connected to thehub by the bodv plate 27. The peripheral portion 26 of the winding drumis provided at its edges with outwardly directed cable retaining flanges28 and interiorly with teeth 29 forming in effect an internal gear.

The side member 11 of the frame is thickened interio-rly to provide abearing 30 in which is journaled a shaft 31, the inner end of whichcarries a pinion 32 meshing with the internal gear 29. A crank handle oroperating lever, indicated as a whole by the numeral 33 is mounted toturn freely upon the shaft 31 and is held against disengagementtherefrom by a ratchet wheel 34- pinned or otherwise secured againstlongitudinal movement from the squared outer end of the shaft 31. Thecrank handle v3,3 includes a body portion 35 and handle 4 ortion 36, thebody portion at its free end ing constructed in the form of a sleeve 37through which the shank or body portion of the handle member 36 passes,this handle member being provided at its free end with the crank handleis provided with a medial, Y longitudinally extending reinforcingshouldei` 40 and such Vcrank handle member, adjacentthat end engagingabout the shaft 31, is olf-set inwardly providing an exterior .shoulder41 in which. is formed a longitudinal socket 42. The stem or shankportion 43 of a reversible locking pawl 44. extends in this socket andis normally held in outermost position by a helical spring 45 seated inthe socket. This stem 43 of the pawl has an enlarged laterally directedhead 46 forming a linger' piece by means of which the pawl may bemanually retracted and its position reversed, as will be laterexplained,

and this extension, at a point substantiallyv 1n alinement with the stemor shank of the pawl, is provided with a transverse pawl shoulder 47having one vertical and one inclined face, as clearly shown in Fig. 6 ofthe drawings. The pawl stem at that side diametrically opposite theextension 46, is provided with a radially extending locking pin 48adapted, under certain circumstances, v

to be swung to seat in a transverse groove 49 formed in the outer Vfaceof the body portion-of the crank handle.

In addition to the above described pawl, controlling the rotation of theshaft 31 upon turning of the crank handle, I provide a second pawl,indicated as a whole by the numeral 50 which engages directly with theteeth of the pinion 32 when in active posi- A tion. This pawl is pivotedintermediate its length upon a pivot pin 51 passed'through the upwardextension or guard arm 16 of the iframeA member 11, immediately abovesuch frame member and has one end offset inwardly, as shown in dottedlines in Fig. 5 to `extend into the plane of the'pinion and then curveddownwardly to form a pinion tooth engaging terminal 52. The opposite endof the pawl is provided with an outwardly directed-extension or finger-piece 53 by means ofwhich the pawl Amay be swung into or out ofengagement with the pinion. The pawl is provided, substantiallyconcentrically with respect to its pivot 51, with an arcuate shoulder 54notched as shown at 55 to receive the rebent terminal of a leaf lockingspring 56 when the pawl is in inactive position, as shown in Fig. 4.

vWhen the pawl is swung to active position;

ther terminal 56 rides out of this notch to engage against the rear faceof'the shoulder and hold the'pawl in engagement with the pinion. Thisleaf spring' is secured'at its opposite end to a stud 57 extendinginwardly from the saine guard arm supporting 4the pawl 50, by a screw orotherfastening device 58. The active terminal o-r pinion engaging end ofthe pawl is so shaped that when the pawl is in active position, it willpermit'- about the drum, when the device is not in l use, and the otherend is passed about one of the pulleys 60.0f a double pulley block 61,back about the idler pulley'19, from l there about the other pulley 62of the pulley bloc-k and is .then secured by any suitable form of clamp63 to the adjacent end of the frame of the windlass.

' In addition to the above described windlass structure, my completemechanism, when used for extracting vehicles from mudholes, includes achain or cable 64v provided at its ends with hooks 65, a second chain orcable 66 provided at one end with a hook 67, and one or more landanchors 68. These land anchors are each preferably formed from a singlepiece of' metal including a body portion terminating at o-ne end in awidened piercing point 69 and at its opposite end in a widened head 70having a claw 71 between the fingers of which a chain link may bepositioned; I

ln employing the above described device to draw a vehicle out of amud-hole or sand pit, the operator first drives one or more of the landanchors or stakes into the earth as One of the hooksf65 of the chain 64is then engaged in the rear end of the frame of the windlass device 10,as shown in the draw-V ings, and its opposite end secured to the vehicle in any suitable manner, a simple way being to pass it about theforward axle 7 2 of the vehicle and secure it by engaging the other hook65 through one of the chain links. The locking pawl 50 is then swung-outof engagement with the pinion 32 and the hand crank locking pawl 44moved to inoperative position by forcing its stem into the socket 42until the pin 48 is opposite the slot- 49 and then swinging the pawl toseat the pin in the slot. In this position. the ratchet wheel engagingshoulder 4T of the pawl is held in spaced relation to thev ratchetwheel, under which circumstances, the cable drum is free to turn withouthindrance and without movement of the crank handle. is then unwound fromthe drum by pulling upon the block and tackle 61, after which the hook67 of the chain 66 is inserted through the eye of the block and tackleand the chain secured between the claws of the land anchors in themanner shown in Fig. 1. The set bolt 39 is loosened to permit withdrawalof the portion 39 of the crank handle from the sleeve 37, such portionat this time being so mounted in the sleeve that the hand grip 38 isdirected inwardly toward the windlass frame, as shown in Fig. 3. Thehand crank portion 36 is then inserted in the manner formed, the pawl 50is thrown into active position and the pawl 44 released by swinging thepin 48 out of the slot 49. This latter pawl is then turned to s uch aposition that it will lock the shaft 31 against such movement as wouldpermit unwinding of the cable 59 from the winding drum and the cable iswound upon the drum by turning the hand crank 33. This winding of thecable upon the windlass, which is anchored by means of the land anchors,results in drawing the vehicle toward the land anchors, and consequentlyout of the mud-hole or sand pit. Because of the employment of the pinion32 with the internal gear 29. great leverage is obtained and but littleeffort is required to extract the vehicle, irrespective of how badlymired it may be. This leverage isstill further increased of course bythe manner in which the cable is trained about the pulleys of the blockand tackle, thewinding drum and the pulley 19 of the Windlass.

After the vehicle has been drawn out of difliculty, the chains 66 and 64are disconnected from the windlass and fr om the land anchors andvehicle axle, respectively, and the land anchors drawn from the ground.The hand crank is then turned to wind up any remaining slack cable,bringing the block and tackle 61 into direct engagement with the windingdrum, as best shown in Fig. 3 of the drawings, after which the handlecarrying portion of the hand crank is again freed from the sleeve andreplaced in reverse position in order that the crank may The cable beswung to the position shown in Fig. 3 with the handle proper extendingtransversely of the windlass frame and thereby occupying practically nospace.

It might be well to state at this point that, in case it becomesdifiicult to draw the cable from the winding drum merely by pulling uponthe block and tackle, the pa'wl 44 may be swung to reverse position tothat which it occupies when winding the cable and with the pawl 50released, the hand crank may be turned to rotate the drum and facilitatethe unwinding of the cable therefrom. The intermediate portion of theslot 49 ispreferably notched as shown at 73 to provide a seat for thepin 48 to prevent casual disengagement of the pawl 44 when the latter islocked in inactive position.

From the foregoing description, it will be apparent that I have provideda simply constructed device which is strong, readily operated anddurable and which, above all. when folded to the position shown in Fig.3 of the drawings, is extremely compact, occupyingA but little morespace in the tool box of the vehicle than would a coil of wire cable ofthe length contained upon the drum if wound by hand, this being due tothe fact that it is almost impossible to tightly wind such cable, saveby the use of considerable force in connection with a winding drum.

Stakes or land anchors of the type disclosed, when applied in the.manner illustrated `in Fig. 1 of the drawings, offer remarkableresistance to their withdrawal, when in use, due to the fact that beingdriven into the ground until their claws are substantially flush withthe surface, the enlarged heads in effect form fulcrums about whichtheir lower ends must swing beforethey can be drawn out by strainapplied in any direction other than the direction of their length. Forthis reason, comparatively small land anchors, not over 10 and 12 inchesin length, are found to be sufficient.

Although I have described the windlass structure in connection with landanchors and chains for extracting vehicles from mud-holes and other likediiiculties. it will of course be understood that I do not wish to limitit to such use as it may be employed for hoisting purposes,"wirestretching, or in fact for any purpose for which it may prove to beadapted, without in the slightest degree departing from the spirit of myinvention. Furthermore, while I have herein illustrated and described aland anchor of novel construction and also a novel method of anchoring apulling device to the ground, I make no claim in this application toeither of the above features, as they form the subject-matter of mypending application Serial No. 841,899, filed May 29, 1914. Furthermore,the chains 64 and 66 may be l or sho the invention, what which one endof a'block and tackle can beconnected, a hollow drum rotatably mountedon said frame between the 'side members thereof and provided with aninternalgear,

- said drum being arranged in longitudinal alinement with said pulley, ashaft on said frame provided with a pinion that meshes with saidinternal gear, and an'operating mechanism for said shaft comprising amanually-operable levelthat can be arranged in parallel relationwith'the side members of said frame when the mechanism is'not in use.

2. A hoisting and pulling mechanism, comprising a frame Aprovided withspaced side members, a yoke-shaped device arranged at right vangles tosaid side members and acting to reinforce and strengthen theintermediate portions of same, a hollow ldrum rotatably mounted on saidside members and arranged between the side said portions of saidyoke-shaped device, an Vinternal gear on 'said drum, a pinion carrled lby saidframe and meshing with said gear,

a manually-operable actuating means for p1n1on, means at one end of saidframe to which a block and tackle can be connect- Y ed, andpmeans at theopposite end of said framel to which a stay or securing device can beconnected.

3. A windlass mechanism :including spaced frame forming straps havingtheir end portions oi'set toward each other to extend in parallel spacedrelation, means connecting such end portions including a pulleyrotatably mounted between adjacent end portions, upwardly directed guardarms carried 4 one by each strap and having inwardly directedover-lapping terminals connected to each other, a shaft mountedv in thestrap members adjacent their juncture with the guard arms, a cablereceiving Winding drum mounted upon the shaft, whereby the guard armsguide the cable during its winding upon or unwinding from the drum, and

means for rotating the drum.

In testimony whereof I aiiix my signature in presence of two witnesses.

ROBERT N. EGGLESTON.

Witnesses:

J. K. MOORE, SAMUEL N. ACKER.

